Integrate Sign.Verification and Improve Error Handling of Pipeline

- Ensure proper communication of errors between pipeline and mzs
  service by converting MoaZSExceptions into DeliveryRequestStatus
  messages.
- Revise MoaZSException: Add optional fields; those fields are a)
  helpful to construct meaningful error messages and b) optional
  because, depending on where an exception appears, either existent or
  non-existent and thus optional. Add inner-class Builder.
- Integrate Signature Verification into pipeline and add Stub for
  SignatureVerification.
- Move TNVZResponse's Mimetype check into dedicated class (Reason:
  separate abstration layers).
- Update api changes in testcases.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/main/java/at/gv/egiz/moazs/pipeline/DeliveryPipeline.java b/src/main/java/at/gv/egiz/moazs/pipeline/DeliveryPipeline.java
index f3ac0e6..f32dfe2 100644
--- a/src/main/java/at/gv/egiz/moazs/pipeline/DeliveryPipeline.java
+++ b/src/main/java/at/gv/egiz/moazs/pipeline/DeliveryPipeline.java
@@ -4,12 +4,12 @@ package at.gv.egiz.moazs.pipeline;
 public interface DeliveryPipeline {
 
     /**
-     * Performs a {@code DeliveryRequest}'s Back-End Tasks
+     * Performs all {@code DeliveryRequest}'s Back-End Tasks.
      *
      * Fetches {@code DeliveryRequest} referred by appDeliveryId from
      * {@code DeliveryRepository}, makes sure that all necessary
-     * tasks are executed and stores the response back to
-     * {@code DeliveryRepository}.
+     * tasks (query tnvz, query msg, verify status) are executed and
+     * stores the response back to {@code DeliveryRepository}.
      * @param appDeliveryId
      */
     void processRequest(String appDeliveryId);